Can we please do something about tunneling?

The most important way to handle tunneling is to understand WHY it happens: good killers will tunnel if they think no one is doing gens, because it punishes that behavior. Good killers won't (generally) tunnel if they suspect people are doing gens, because tunneling is very inefficient time wise as it minimizes global pressure.

This means you ABSOLUTELY must do your best to betray the fact your dedicated to a rescue, or trying to save someone from a chase. You must either ACTUALLY be on a gen, or ensure the killer has no idea where you are so they THINK your on a gen. Half the survivor team wants to be on a gen at all times to prevent the killer from just doing whatever he wants.

Think of being on a gen as 'damaging' the killer. If your in a more traditional game and not attacking someone at all, of course they are just going to super efficiently murder your entire team, your not doing anything to stop them. Gens is how you stop the killer. A killer who suddenly has 2, or worse, 3 gens, pop on them, knows their tunnel/camp strategy screwed up and that if they keep doing it odds are extremely good the survivors will just finish the rest of the gens before they down or kill the survivor they are focusing on. They HAVE to give it up, or lose.

Some bad killers will take the L to ensure one survivor also takes the L. Gotta take that in stride, you just 'won' the match overall, with 1 survivor 'losing' and the killer losing, allowing 3 other survivors to win. The team overall benefited from the tunnel and you can go into next match trying to ensure the survivor that got tunneled isn't first on hook again.

Overall, you need to force the killer to be afraid of you, to be anxious. If your not giving them anything else to think about, they aren't going to DO anything else. A killer isn't going to give up a kill out of the goodness of their hearts, and you can't steal the kill from them. You gotta MAKE them give it up.

Some more situational tips on avoiding tunneling:

Try to not be the first down, by not instantly gluing yourself to a gen until your aware of what other survivors are doing and if anyone is in a chase, if you are solo. In solo you have no control over if other survivors go for 'instarescues,' AKA hook farming, that do nothing but get them points and rapidly accelerate your death. If your off hook, you can be patient and do a gen, see if a rescue happens, and if it doesn't THEN rescue.

On top of that, be very careful not to go down super early. You really want people to have time to get a gen half done before anyone goes down at LEAST or else the killer can tunnel you out at the cost of maybe 3 half gens, which is an extremely good deal for them. Also, killers will consider you the weakest link and will try to eliminate you fast if you go down absurdly early, and other survivors are likewise less likely to want to help you if they think you are a weak player who will just go down again.

Don't rescue recklessly. The tiers are a LOT of time, and its generally better to rescue later in a tier than immediately, because its safer for a survivor. A bad rescue is WORSE than not rescuing the survivor, because you accelerate their death and allow the killer to pressure 2 survivors at once: You weren't on gens in order to rescue, paying time that got the team nothing, AND you gave the killer an extra odd 30 seconds because you took away an entire hook state. Failed rescues are the WORST THING you can do as a survivor in DBD, and the best thing that can happen to a killer. You absolutely cannot give them up, and can't expect a killer to not brutally capitalize on sloppy rescues.

As a killer main who plays plenty of survivor, I tunnel when I feel it is necessary. If I feel I am at risk of losing the game without using what some consider scummy tactics, I'll do whatever is needed to win. That said, I'm never really in this situation unless it's an awful map/killer or the survivors are actually decent, so against average red ranks I just 12 hook usually. Personally, I love getting tunneled (hear me out). When the killer is tunneling you, this is not the same as your teammate unhooking you in his face without borrowed time. That's the survivor's fault, not the killer. When you are getting tunneled, the killer is going out of their way to get you out of the match. I love this, as it means I get chased, which is by far the most fun part of playing survivor. At the end of the day, I don't mind if I die, I care if I had good chases, which is a lot easier when the killer wants me specifically out of the game. I can safely say this because I'm very comfortable in chase largely just due to experience, so I can understand when someone who enjoys a more immersive playstyle or isn't as great in chase gets frusturated.

The same can be said about survivors doing totems

Even if you play for fun, we shouldn't get mad at people playing to win for doing so. Unfortunately the game is designed in a way killing someone asap is what the killer wants to do if they have any intention of winning. Unless we change the foundation and system of the hooks and killer objective itself, tunneling will always happen and "doing something about it" would be punishing the killers for playing to win or playing well, which DS and other second chance perks already do.

Additionally, if the community decides they want tunneling and camping to stop, they also need to realize the survivor side needs to take steps as well. Not doing gens so quickly, not hook bombing/saving immediately, and not running a bunch of second chances for example. Generally not being toxic because most survivors just ooze toxicity. If the community can come together they could really change the game, but that's extremely unlikely.

You have to give the killer time to get those extra hooks if you want your games to be 12 hook games.